Items | Training Set | Test Set | Prediction Set | Total |
Number | 1021 | 1039 | 4917 | 6977 |
Age ± SD | 50.1 ± 19.55 | 51.08 ± 19.01 | 48.01 ± 20.78 | 48.78 ± 20.38 |
Gender | ||||
Male | 716 | 765 | 3267 | 4748 |
Female | 305 | 274 | 1650 | 2229 |
Province of origin | ||||
Beijing | 477 | 476 | 2012 | 2965 |
No Beijing | 544 | 563 | 2905 | 4012 |
Days of hospitalization ± SD | 25.69 ± 18.15 | 24.04 ± 15.63 | 24.13 ± 20.71 | 24.34 ± 19.67 |